Valve.



1. E. SWENDEMAN.

VALVE.

APPLICATION FILED AIR. 3, I9I2.

Patented Apr. 25, 1916.

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U/ness es: f [721267715072 MAA/m- I QS I Ik Ilm. w In JOSEPH E. SWENDEIVIAN, OF BOSTON, MASSACHUSETTS.

VALVE.

Specification of Letters Patent.

Patented Apr. 25, 1918..

Appli-cation filed April 3, 1912. Serial No. 688,216.

T 0 all whom it may concern.'

Be it known that l1, JosErI-i E. SWENDE- MAN, a citizen of the United States, and a resident of Boston, county of Suffolk, and State of Massachusetts, have invented an improvement in Valves, of which the following description, in connection with the accompanying drawings, is a specitication, like characters on the drawings representing like parts.

rThis invention relates to improvements in valves and has particular reference to tank valve mechanisms, and will be best understood by reference to the following specilication, when taken in connection with the accompanying drawings of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.l

1n the drawings: Figure 1 is a plan of a valve mechanism embodying my invention. Fig. 2 is an elevation, partly in section, of the valve mechanism as applied to a tank, shown in section. lin this form of the valve mechanism the tubular valve communicates at all times with the inlet of the tank, while the outlet discharges into the tank.

Referring to the drawings and to the embodiment of my invention which l have there shown for illustrative purposes, 3 is a tubular valve having two open ends 4 and 5 the former of which passing through the wall of an outlet chamber, coperates with a seat 6 while the latter, similarly passing through the opposed wall of aninlet chamber, communicates at alltimes with an inlet passage 7, the two chambers being united by webs and forming a casing 8, in which passage the end 5 of said valve is slidably arranged, while said valve is guided adjacent to its other end 4 in a bushing 9 having screw-threaded engagement with said casing.

rThe valve 3, where it is guided in the passage 7, is encircled by a packing ring 10 held in place by a gland 11 of well-known construction having screw-threaded engagement with the casing 8, said packing ring serving to prevent any'y leakage from said passage around said valve into a tank 12 in which said casing is mounted. The casing 8 is provided with an outlet passage surrounding the valve 3 and its seat 6, said outlet passage discharging into the tank 12 preferably through a pipe 14, although said pipe may be dispensed with if desired.

rlFhe valve seat 6 preferably has provision for adjustment longitudinally of the valve 3 for the purpose oftaking up any possible wear and also for the purpose of adjusting the valve-operating mechanism which will presently be described and to that end 'said valve-seat is made in the form of a plug having screw-threaded engagement with the casing 8 and is provided with a polygonal head 15 to which a wrench may be applied for the purpose of adjusting the valve seat.

For convenience of manufacturing and assembling the parts the valve-seat 6, bushing 9 and gland 11 are coaXially arranged and made the same size, while the casing 8 is provided with an opening 16 permitting the introduction of said bushing and said gland and also providing a convenient construction whereby the operating mechanism of the valve may be connected thereto within said opening.

The valve 3 is moved toward and away from its seat 6, in the present instance, by mechanism actuated by changes of level of the liquid within the tank. This mechanism comprises a float 17 carried by a float lever 18 fulcrumed ona pivot 19 on the casing 8 and connected to the valve 3 by a toggle designated generally by the numeral 2O and consisting of a lever 21 and a link 22 the latter being bifurcated at one end and having two arms 23, 23 pivoted on pivots 24, 24 on a collar 25 secured to said valve. The other end of the link 22 is pivoted at 26 to the central portion of the lever 21, while said lever is pivoted at 27 to a pair of ears 28 on the casing 8 and is provided at its other end with a pivot 29 arranged to slide at its ends in slots 30 provided in a pair of arms 31 on the float lever 18.

By means of the valve operating mechanism just described the valve is moved a comparatively small distance with a great travel of the ball and accordingly the leverage is so great and the connections so simple and comparatively free from friction that the valve is exceedingly free and sensitive in its action under the iniiuence of the ballfloat. If desired the float-lever 18 may be constructed in two parts 32 and 33 pivoted one on the other and normally secured in fixed position with respect to each other by a screw 34 whereby the position of the ball float 17 may be varied to suit the circumstances.

When the valve is in operation the water or other liquid enters the inlet passage 7 and passes through the tubular valve 3 into *the* 6 until the valve contacts with the seat thus stopping the iiow of the water and arresting the movement of the ball-float. It will now be vevident that since the valve is tubular there will be only a very small area exposed to the pressure at'the inlet, while the stationary imperforate seat receives tliepressure for the remaining area of the circle of the valve. Consequently the pressure tending to retain the valve in closed position even in valves of very large size is very slight as compared with other types of valves in which the pressure acts against a valve area equal to the circle of the valve.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. A valve mechanism comprising, in combination, means forming inlet and outlet chambers, each having a wall opposed to the other and connected to each other by a pair of webs separated by a space open to the exterior of said chambers, a valve-seat within said outlet chamber there being an inlet rleading into said inlet chamber and an outlet leading from said outlet chamber, a tubular valve having two open ends one of which communicates at all times with said inlet, and the other of which passes into said outlet chamber and normally seats against said valve-seat, and means for operating said valve including a member connected thereto in said space and means accessible through the space between said webs to render unleakable the connection between said valve and inlet chamber.

2. A valve mechanism comprising, in combination, means forming inlet and outlet chambers, each having a wall opposed to the other andconnected to each other by a pair of webs separated by a space open to the exterior of said chambers, a valve-seat within said outlet. chamber there being an inlet leading into said inlet chamber and an said outlet chamber and normally seats against said valve-seat, and means for operating said valve including a member connected thereto in said space, and means accessible through the space between said webs to position the valve relatively to the outlet chamber to bring the same into operative relation with its seat.

3. A valve mechanism comprising, in combination, means forming inlet and outlet chambers each having a wall opposed to the other and connected to each other by a pair of Webs separated by a space open to the exterior of said chambers, a valve-seat Within said outlet chamber there being an inlet leading into said inlet chamber and an outlet leading from said outlet chamber, a tubular valve having two open ends one of which communicates at all times with said inlet, and the other of which passes into said outlet chamber and normally seats against said valve-seat, a gland encircling said valve and engaging said wall of said inlet chamber, said gland being accessible through said space, and a packing encircling said valve at the inner end of said gland.

4. A valve mechanism comprising, in combination, means forming inlet and outlet chambers each having a wall opposed to the other and connected to each other by a pair of webs separated by a space open to the exterior of said chambers, a valveseat within said outlet chamber there being an inlet leading into said inlet chamber and an outlet leading 'from said outlet chamber, a tubular valve having two open ends one of which communicates at all times with said inlet, and the other of which passes into said outlet chamber and normally seats against said valve seat, a bushing encircling said valve and extending into said wall of said outlet chamber, a gland encircling said valve and engaging said wall of said inlet chamber, said gland being accessible through said space, and a packing encircling said valve at the inner end of said gland.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JOSEPH E. SWENDEMAN.

Witnesses:

Louis A. JONES, CLARA L. STUART.

,Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

